Global Advanced Research Journal of Geology and Mining Research
February 2013 Vol. 2(1), pp 015-026
Copyright © 2013 Global Advanced Research Journals


Full Length Research Paper

Natural hazards along the Bamenda escarpment and its environs: The case of landslide, rock fall and flood risks (Cameroon volcanic line, North-West Region)

Guedjeo C.S.1, Kagou Dongmo A.1*, Ngapgue F.2 Nkouathio D. G.1, Zangmo Tefogoum G.1, Gountié Dedzo M.1 and Nono A.1

1Department of Earth Sciences, Faculty of Sciences, University of Dschang, PO Box 67, Dschang, Cameroon.
2Département de Génie Civil, IUT Fotso-Victor, Université de Dschang BP 134 Bandjoun

*Corresponding authors Email: kagoudongmo@yahoo.fr

Accepted 07 January 2012

Abstract

Bamenda town is situated on the North Northwest slope of the Bamenda Volcano (2621m) which is a stratovolcano situated along the Cameroon Volcanic Line precisely between Mount Bambouto (2740m) and Mount Oku (3011m). The general morphology shows the presence of an escarpment of about 150m high, which separates Bamenda town into Up Station and Down Town areas. Rapid population increase in the town of Bamenda (500,000 inhabitants) has pushed the inhabitants to settle along the slopes of the Bamenda Mountain and close to river channels thereby exposing themselves to landslide, rock fall and flood hazards, with negative environmental and socioeconomic impacts. These hazards usually occur during the rainy season and are provoked by natural and anthropogenic factors. The area consists of volcanic (ignimbrites, trachytes and dolerites) and plutonic (granites and gneisses) rocks. Geotechnical analysis of the soils shows that the soils have low bulk density (1.32-1.59), low specific density (2.20-2.58); high porosity (47.92-64.28 %); water content exceeds 35.2%, and predominance of fine grain particles. Atterberg limits indicate that the soils are plastic in nature. Cohesion is low (2.60-7.20 kPa) the angle of internal friction values vary from 25.5 to 28. These parameters indicate that the soils are predisposed to landslides. The model employed in realizing the risk maps uses parameters such as; slope, type of material, nature of river, the presence of rocks and/or escarpment and influence of geotechnical parameters. The obtained risk maps indicate settlement areas at risk. This approach can assist in town planning, risk mitigation, environmental and civil protection.

Keywords: hazards, floods, rock fall, landslide, escarpment, risk maps and Bamenda volcano.

 

Related Articles


Original Research Articles
Molanejad M, Soltani M and Ranjbar Saadat Abadi A
Characteristics and mechanism of extreme climate events under climate change background in Iran - part I: drought
Glo. Adv. Res. J. Geol. Mining Res. July 2014 Vol: 3(2): - [Abstract] [Full Text - PDF] (2,368 KB)
Adetoro Adebayo K
Assessment of the Quality of Cables produced in Nigeria
Glo. Adv. Res. J. Geol. Mining Res. July 2012 Vol: 1(4): - [Abstract] [Full Text - PDF] (521 KB)
Youssef El Hani, Najat Mahassini, Leila Radi and Abdelkarim Filali-Maltouf
Assessment and chemical risk management in healthcare establishments «case of a laboratory of anatomy and pathological cytology»
Glo. Adv. Res. J. Geol. Mining Res. December 2016 Vol: 5(12): - [Abstract] [Full Text - PDF] (262 KB)
Raji MO, Salihu Muhammad, Firima Dinebari, Amira Bello, Oladigbolu RA and Kaoje AU
Predictors of Hawking experience, and knowledge of health hazard of street hawking, among Child Hawkers in Sokoto Metropolis
Glo. Adv. Res. J. Geol. Mining Res. September 2017 Vol: 6(9): - [Abstract] [Full Text - PDF] (123 KB)
Reviews
Abdul Rehman, Luan Jingdong, Yuneng Du, Rafia Khatoon, Shoaib Ahmed Wagan, Sehran Khan Nisar
Flood Disaster in Pakistan and its Impact on Agriculture Growth (A Review)
Glo. Adv. Res. J. Geol. Mining Res. December 2015 Vol: 4(12): - [Abstract] [Full Text - PDF] (224 KB)
Abd El-Aleem Saad Soliman Desoky
Non-Infectious Diseases caused by The Risk of Climate Change on Earth
Glo. Adv. Res. J. Geol. Mining Res. October 2017 Vol: 6(10): - [Abstract] [Full Text - PDF] (114 KB)

Current Issue

Viewing Options

View Full Article - PDF
Download Full Article - PDF

Search for Articles

Guedjeo CS on Google Scholar
Guedjeo CS on Pubmed
Kagou Dongmo A on Google Scholar
Kagou Dongmo A on Pubmed
Ngapgue F Nkouathio DG on Google Scholar
Ngapgue F Nkouathio DG on Pubmed
Zangmo Tefogoum G on Google Scholar
Zangmo Tefogoum G on Pubmed
Gountie Dedzo M on Google Scholar
Gountie Dedzo M on Pubmed
Nono A on Google Scholar
Nono A on Pubmed

Statistics

Viewed 2066
Printed 302
Downloaded 2081
Powered By iPortal Works